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investigated the kinetics of mullitization, all reporting that mullitization occurs by nucleation-growth mechanisms. Okada [ 3 ] summarized the activation energy values for mullitization from various starting materials (such as diphasic gel, monophasic gel

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Thermal and kinetic analysis of uranium salts

Part 2. Uranium (VI) acetate hydrates

Journal of Thermal Analysis and Calorimetry
Authors: Gülbanu Koyundereli Çılgı, Halil Cetişli, and Ramazan Donat

parameters were determined. The reaction enthalpy value of dehydration stages were calculated from differential scanning calorimeter (DSC) and differential thermal analysis (DTA) peak areas. The activation energy value for each stage was calculated via

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other workers. Iso-conversional techniques make it possible to estimate the activation energy of a process as a function of the extent of conversion, α . Analysis of the activation energy dependence on α provides important clues about reaction

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α-Al 2 O 3 used as a reference). Thermogravimetric data were applied for determination of dependence of effective activation energy E a on conversion using isoconversional method of Kissinger–Akahira–Sunose [ 9 ] based on equation where T α is

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phase boundary and consists of two consecutive events: Atomic or molecular diffusion to the phase boundary and the crystallization reaction at the boundary [ 10 ]. Therefore, knowledge of the glass transition activation energy E t , activation energy of

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Thermal stability and crystallization kinetics of Se–Te–Sn alloys using differential scanning calorimetry

DSC study of Se92Te8−x Sn x (x = 0, 1, 2, 3, 4, 5) chalcogenide glasses

Journal of Thermal Analysis and Calorimetry
Authors: Rajneesh Kumar, Pankaj Sharma, P. B. Barman, Vineet Sharma, S. C. Katyal, and V. S. Rangra

the alloy [ 15 ]. From the heating rate dependence of T g and T p , the activation energies for glass transition and crystallization have been evaluated. Experimental details Bulk samples of Se 92 Te 8− x Sn x ( x = 0

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this observation, it is possible to estimate the activation energy of a sample which is required for thermal degradation. The Ozawa method is often used to determine the activation energy of degradation under the following set of equations and

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three times. All profiles were not presented here for concision, because the profile of 25 °C min −1 can be one perfect representative. Kinetic parameters of the pyrolysis Calculation of activation energy

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decomposition of modified banana stem fibers using the thermogravimetric analysis (TG) technique. Kissinger [ 27 ], Friedman [ 28 ], and Flynn–Wall–Ozawa [ 29 , 30 ] equations were employed to determine the activation energy of the thermal decomposition

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(ethylene terephthalate) (PET) was processed in the presence for MCM-41 and the thermal properties were investigated. The kinetics of the process was monitored by TG, using integral dynamic curves at multiple heating rates, and the activation energy was estimated from the

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